from math import sqrt

def add(x, y):
    return x+y
    
def sub(x, y):
    return x-y
    
def mul(x, y):
    return x*y
    
def div(x, y):
    return x/y
    
def exa_div(x, y):
    return x//y
    
def take_re(x, y):
    return x%y
    
def in_power(x, y):
    return x**y
    
def ex_root(x):
    return sqrt(x)
    
if __name__=="__main__":
    print(add(1, 2))
    print(sub(3, 2))
    print(mul(2, 4))
    print(div(2, 4))
    print(exa_div(2, 4))
    print(take_re(2, 4))
    print(in_power(2, 4))
    print(ex_root(4))



#print(sqrt(4))